<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 搜索与添加区域 -->

      <el-row :gutter="20">
        <el-col :span="9"
          ><el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <template #append>
              <el-button
                icon="el-icon-search"
                @click="
                  queryInfo.pagenum = 1;
                  getUserList();
                "
              ></el-button>
            </template> </el-input
        ></el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <el-table :data="userlist" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template #default="scope">
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#13ce66"
              inactive-color="#ff4949"
              @change="userStateChange(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" min-width="180px">
          <template #default="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="dialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <template #footer>
        <span>
          <el-button @click="dialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </template>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <template #footer>
        <span>
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
      </template>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色: <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select></p>
      </div>
      <template #footer>
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </template>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) return callback()
      callback(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^1([38]\d|5[0-35-9]|7[3678])\d{8}$/
      if (regMobile.test(value)) return callback()
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10
      },
      userlist: [],
      total: 0,
      dialogVisible: false,
      editDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3到10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6到15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 查询到的用户信息对象
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }
          // { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' }
          // { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: {},
      // 已选中的角色id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    getUserList () {
      this.$http.get('users', { params: this.queryInfo }).then((res) => {
        if (res.meta.status !== 200) { return this.$message.err('获取用户列表失败') }
        this.userlist = res.data.users
        this.total = res.data.total
      })
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值 改变的事件
    handleCurrentChange (page) {
      this.queryInfo.pagenum = page
      this.getUserList()
    },
    // 监听switch开关状态的改变
    userStateChange (userinfo) {
      this.$http
        .put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        .then((res) => {
          if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('修改失败')
          }
          this.$message.success('更新用户状态成功')
        })
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser () {
      this.$refs.addFormRef.validate((valid) => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        this.$http.post('/users', this.addForm).then((res) => {
          if (res.meta.status !== 201) {
            return this.$message.error('添加失败')
          }
          this.$message.success('添加成功')
          // 隐藏添加用户的对话框
          this.dialogVisible = false
        })
      })
    },
    // 展示编辑用户的对话框
    showEditDialog (id) {
      this.$http.get('users/' + id).then((res) => {
        if (res.meta.status !== 200) {
          return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      })
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate((valid) => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        this.$http
          .put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          .then((res) => {
            if (res.meta.status !== 200) {
              return this.$message.error('修改失败')
            }
            // 关闭添加用户的对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('修改成功')
          })
      })
    },
    // 根据id删除对应的用户信息
    removeUserById (id) {
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then((res) => {
          this.$http.delete('users/' + id).then((res) => {
            if (res.meta.status !== 200) {
              return this.$message.error('删除用户失败')
            }
            this.$message.success('删除用户成功')
            // 刷新数据列表
            this.getUserList()
          })
        })
        .catch(() => {
          this.$message.info('已取消删除')
        })
    },
    // 展示分配角色的对话框
    setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取所有角色的列表
      this.$http.get('roles').then(res => {
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败')
        }
        this.rolesList = res.data
      })
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色')
      this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId }).then(res => {
        if (res.meta.status !== 200) {
          return this.$message.error('分配角色失败')
        }
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible = false
      })
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style scoped lang="less">
</style>
